Reflector



June 14, 1932. E. L sjLvERMAN 1,863,171

REFLECTOR Filed Jan. 19, 1931 INVENTOR .4 r 6m., M" ATTORNEYS Patented June 14, 1932 PATENT OFFIC EDWARD' L. SILVERMAN, OF NEW YORK, N. Y'.

BEFLECTOR Application filed January 19, 1931.

My present invention is particularly concerned with lighting fixtures of the character in which a translucent light globe is utilized to diffuse and soften the light rays emanating from a lamp which it houses.

An object of the invention is to provide a fixture of this character which will prevent the escape of direct light upwardly and in which there will be no light rays lost as in the case in present types of construction, where the globe support itself is either of light absorbing character or of very poor reflecting character.

Another object is to accomplish the foregoing result without in any manner whatsoever altering the standard construction of the globe and its supporting fixture or the lamp and its supporting fixture and by the simple expedient of applying a light reflecting and diffusing attachment to the globe.

Another object of the invention is to provide a device ofthe character described above in which the normal appearance of the lighting fixture will be in no way altered and yet in which the diffused light emanating from the globe will be intensified.

Another object of the invention is to provide a light diffusing and reflecting attachment capable of almost universal adaptation to the standard types of globes and applicable thereto by the simple expedient of dropping it into the neck of the globe.

In accordance with a preferred embodiment of the invention, the light reflecting and intensifying attachment which is utilized consists of a plate adapted to fit within the neck of a globe and flanged to rest on the usual flange at the top of the globe. This plate has a central aperture therein to accommodate the neck of the lamp and its under surface is of good light reflecting material. In order to avoid concentrated reflection of light upon any particular area of the globe surface, the reflecting and intensifying device is preferably provided with a series of concentric annular corrugations of curved configuration in transverse section whereby the light rays in striking the reflector, will bc reflected in every direction and the intensity Serial No. 509,632.

of the diffused light emanating from the globe will be greatly increased.

The invention may be more fully understood from the following description in connection with the accompanying drawing, wherein Fig. 1 is a side elevational View of one typical type of lighting fixture adapted to embodying the invention,

Fig. 2 is an enlarged fragmentary vertical 60 sectional view therethrough taken approximately on the line 2--2 of Fig. 1,

Fig. 3 is a plan view of the reflecting attachment itself.

The drawing illustrates a fixture of a character which is entirely conventional save for the presence of my improved reflecting attachment.

The fixture may include the usual canopy 10 mounted on the lower end of a pendant 70 rod 11, which houses the wires supplying current to a bulb 12 mounted in a conventional socket 13 within the canopy. The bottom of the canopy is provided with a generally cylindrical flange 14 and screws 15 working 75 through this flange, are adapted to engage the reduced neck-16 of a translucent lamp globe`17 of any desired shape and configuration. Practically all globes of this general type are characterized by the presence of the reduced neck 16 between the body of the globe and the outward flare or flange 17 at its open upper end.

The construction as thus far described, is entirely conventional. One of the problems with this type of fixture has been the fact that the full value of the light generating capacity of the bulb has not oeen taken advantage of or has not been properly utilized. With the type of fixture such as that herein shown, there is a tendency for much of the light to be absorbed by the interior surface of the canopy.

l correct this difficulty by the provision of a light reflecting and intensifying device illustrated in Fig. 3. This device consists of a circular metal disk 18 having an upstanding circular flange 19 at its edge with the top of the flange flared outwardly as at 20. Flange 19 is of less external diameter than the inter- 10U pendant ceiling 65 nal diameter of the neck 16 and the flare 201 is of greater diameter than the neck 16 and consequently adapted to rest by gravity upon the flare or fiange 17 of the globe proper. The disk 18 has a central circular opening 21 therein of sufficient size to accommodate the neck of the lamp 12 and may, if desired, be provided with a few slnall perforations such as 22, adapted to serve as vents through which the heated air may escape from the globe. The light reflecting attachment may conveniently be stamped from a single piece of metal stock and preferably is, the disk portion being formed of a series of annular corrugations. each of which is generally semicircular in cross section, the corrugations conjointly giving to the transverse section of the disk. the sinuous appearance illustrated in Fig. 2.

The purpose of these corrugations is to prevent light from being reflected only on a localized portion of the translucent surface of the globe. Due to the size of the light source itself and due to the indefinite number of angles of reflection presented by the corrugated reflector member, the effect will be a general intensification of the diffused light emanating from the globe. It will be obvious that the use of the reflector member involves no alterations in the construction of any of the standard parts of the fixture and in no way complicates the assembly of the fixture. In assembly, the reflector member is simply slipped over the lamp as the bulb is screwed home and then as the globe itself is applied, the reflector member is picked up by the Harige 17 and the reflector is supported by this fiange.

It will thus be seen that there is herein described apparatus in which the several features of this invention are embodied, and which apparatus in its action attains the various objects of the invention and is well suit;- ed to meet the requirements of practical use.

As many changes could be made in the above construction, and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is In a lighting fixture of the character which includes a pendant translucent light diffusing globe having a neck portion to receive support screws, and closed at its top by a substantially light-absorbing member which carries the screws, means to substantially exclude the passage of light rays into the light absorbing support member and to intensify the diffused light emanating from the globe without localizing the intensity at any part of the globe, said means comprising a metal stamping including a circular disk having an opening to receive the neck of the lamp and having vent openings therein and a flared circular flange integral .with the disk to suspend the same within the neck of the globe, the disk being concentrically annularly corrugated to present a substantially uniformly undulating cross section, and the unl. 

